package demo4.controller;
import com.tedu.InputUtil;
import demo4.mapper.UserMapper;
import demo4.mapper.IUserMapper;
import demo4.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.List;
import java.util.Scanner;

@Component
public class UserController {
    @Autowired
    private IUserMapper userMapper;
    public void start(){
        System.out.println("请选择对应的操作,输入序列号:");
        System.out.println("1:注册,2:登录,3:修改用户信息,4.用户列表,5:删除用户");
        Scanner scanner = new Scanner(System.in);
        int num = Integer.parseInt(scanner.nextLine());
         switch(num){
             case 1:
                 regUser();
                 break;
             case 2:
                 loginUser();
                 break;
             case 3:
                 updateUser();
                 break;
             case 4:
                 listUser();
                 break;
             case 5:
                 deleteUser();
                 break;
             default:
                 System.out.println("其他业务正在开发中,敬请期待!");
         }
    }
    public void listUser(){
        System.out.println("用户列表:");
        List<User> userList = userMapper.selectAll();
        for (User user : userList){
            System.out.println(user);
        }

    }
    public void deleteUser(){
        System.out.println("删除用户信息:");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名:");
        String username = scanner.nextLine();
        int num = userMapper.deleteByUsername(username);
        System.out.println(num>0?"删除成功":"用户不存在");

    }
    public void updateUser() {
        System.out.println("修改用户信息:");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要修改的用户的用户名:");
        String username = scanner.nextLine();
        System.out.println("请输入新密码:");
        String password = scanner.nextLine();
        System.out.println("请输入新昵称:");
        String nickname = scanner.nextLine();
        System.out.println("请输入新年龄:");
        int age = scanner.nextInt();
        User user = new User(null,username,password,nickname,age);
        int num = userMapper.update(user);
        System.out.println(num>0?"修改成功":"用户名无效");

    }
    public void regUser(){
        User user = InputUtil.getInputObject(new User());//老师自己写的东西,非标准API
//下方注释为标准写法:
       /** System.out.println("欢迎注册");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名:");
        String username = scanner.nextLine();
        System.out.println("请输入密码:");
        String password = scanner.nextLine();
        System.out.println("请输入昵称:");
        String nickname = scanner.nextLine();
        System.out.println("请输入年龄:");
        int age = scanner.nextInt();

        User user = new User(null,username,password,nickname,age);*/

       //if (userMapper.selectByUsername(Username)!=null) {//标准写法时直接调用username
        if (userMapper.selectByUsername(user.getUsername())!=null) {
            System.out.println("该用户已存在");
        } else {
            int num = userMapper.insert(user);
            System.out.println(num>0?"注册成功":"注册失败");
        }


       // userMapper.insert(null);
    }
    public void loginUser(){
        System.out.println("欢迎登录");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名:");
        String username = scanner.nextLine();
        System.out.println("请输入密码:");
        String password = scanner.nextLine();

        User user = userMapper.selectByUsername(username);
        if(user==null){
            System.out.println("用户名输入有误");
        }else {
            if (user.getPassword().equals(password)){
                System.out.println("登陆成功,欢迎【"+user.getNickname()+"】回来");
            }else{
                System.out.println("密码输入有误!");
            }
        }


    }

}
